Acoust. Sci. & Tech. 27, 6 (2006)
Special issue on introduction to the amazing world
of sounds with demonstrations
Kaoru Ashihara1 , Akira Nishimura2 and Takayuki Arai3
National Institute of Advanced Industrial Science and Technology, AIST,
1–1–1 Higashi, Tsukuba, 305–8566 Japan
Tokyo University of Information Sciences, 1200–2 Yato-cho Wakaba-ku, Chiba, 265–8501 Japan
Sophia University, 7–1 Kioi-cho, Chiyoda-ku, Tokyo, 102–8554 Japan
properties of the central nervous system. Some of the
1. INTRODUCTION topics have already been published in the Journal of the
Under certain conditions, the auditory system shows a Acoustical Society of Japan in Japanese . In the future,
number of amazing behaviors. Some of them are unique full academic papers with demonstrations will be published
and probably have signiﬁcant importance in the perception in Acoustical Science and Technology.
of sounds. For example, we sometimes hear components Please read the following sections for further informa-
that are actually missing or certain sounds are heard as tion and instructions about the demonstrations.
if they are continuous even though they are physically
intermittent. These phenomena are sometimes illusory. It
2. ACCESS TO SUPPLEMENTARY
had been diﬃcult, however, to describe these phenomena
in articles without audio demonstrations. Even some Each article provides supplementary media ﬁles. To
fundamental properties of sounds, such as velocity, are view and listen to the ﬁles, access the following internet
not easily understood without visual demonstrations. web page.
Thanks to the remarkable progress of information http://www.asj.gr.jp/2006/data/ast2706.html
technologies, it is possible to search and access various This page contains hyperlinks to all articles in the PDF
types of media data existing somewhere in the world by format and hyperlinks to the table of contents of the
clicking the mouse. The Acoustical Society of Japan has its supplementary media ﬁles. The media ﬁles also can be
own WWW site, that is accessed by clicking on the underlined words in the PDF
This site provides a large amount of information. A CD-ROM, which includes all articles in the PDF
The recent issues of the journal ‘Acoustical Science and format and supplementary media ﬁles, will be attached to
Technology’ can be viewed online. These technologies the Journal of the Acoustical Society of Japan vol. 63, no. 4,
make it possible to publish articles with audio and audio- which will be published in April, 2007.
visual demonstrations. The formats of the media ﬁles are WAV (Microsoft
This special issue entitled ‘Introduction to the amazing RIFF audio, 16-bit resolution and 44,100 Hz sampling, mono
world of sounds with demonstrations’ is released to or stereo), MPEG-1 video, a SWF (Macromedia Flash) ani-
introduce some of the interesting properties of sounds mation and an executable binary of Microsoft Windows.
and the perception of sounds. Each article is accompanied
by audio or audio-visual demonstrations that are available
3. COPYRIGHTS AND MORE
online, so that the readers can experience the phenomena The copyrights of all of the supplementary media ﬁles
by themselves. Some unique materials for education in in this special issue are held by the Acoustical Society
acoustics are also introduced. of Japan. The authors of each article have the rights of
Not only the phenomena are introduced, but each modiﬁcation, copying, and published transmission of the
article also provides scientiﬁc considerations on each topic. contents of their media ﬁles.
These phenomena are closely related to some of the Those who access the supplementary media ﬁles only
important features of the auditory system, for example, have rights to listen to and/or watch the contents.
speech perception, spatial listening, auditory scene analysis
and audio-visual interaction. The study of these phenomena REFERENCES
will give us insights into the physics of sounds, functions of  ‘‘The special issue Amazing world of hearing,’’ J. Acoust. Soc.
the peripheral and central auditory system and even the Jpn. (J), 61, 260–294 (2005).